Preparation of powdered activated carbon from rice husk and its methane adsorption properties
Preparation of powdered activated carbon from rice husk and its methane adsorption properties
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DOI：
10.1007/bf02706811
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发表时间：
2006-07-01
影响因子：
2.7
通讯作者：
Moon, Hee
中科院分区：
文献类型：
--
作者：
Balathanigaimani, Marriyappan Sivagnanam;Kang, Hyun-Chul;Moon, Hee
吸附天然气(ANG)储存过程的成功主要是基于吸附剂的特性，因此从热力学的角度分析了各种合成的吸附剂对甲烷的吸附。合成了稻壳活性碳(AC-RH)，并与苯酚基活性碳(AC-PH2O和AC-PKOH)进行了甲烷吸附性能的比较。采用容量法在不同的恒温(293.15、303.15、313.15、323.15 K)和3.5兆帕压力下进行了吸附实验。由于AC-RH的比表面积高于其他两种吸附剂，因此AC-RH对甲烷的吸附最大。实验数据符合Langmuir-Fruendlich等温式。此外，用Clausius-Clapeyron方程计算了吸附等温热。
Success of adsorbed natural gas (ANG) storage process is mainly based on the characteristics of the adsorbent, so various synthesized adsorbents were analyzed for methane adsorption on a thermodynamic basis. Activated carbon from rice husk (AC-RH) was synthesized and its methane adsorption capacities were compared with phenol based activated carbons (AC-PH2O and AC-PKOH). The adsorption experiments were conducted by volumetric method under various constant temperatures (293.15, 303.15, 313.15 and 323.15 K) and pressure up to 3.5 MPa. Maximurn methane adsorption was observed in AC-RH as its surface area is higher than the other two adsorbents. The experimental data were correlated well with Langmuir-Fruendlich isotherms. In addition, isosteric heat of adsorption was calculated by using Clausius-Clapeyron equation.